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Evaluation of a leukocyte esterase and nitrite test strip for detection of bacteriuria


, : Evaluation of a leukocyte esterase and nitrite test strip for detection of bacteriuria. Current Microbiology 11(2): 119-122

The LN Chemstrip leukocyte esterase (LE) spot and the nitrite (N) spot were compared separately and in combination with colony-forming units (CFU/ml) in 628 urines. Using a positive LE or a positive N as an indicator of significant bacteriuria (105/ml), the sensitivity, specificity and the negative predictive values were high, but the positive predictive value was low. When LE and N were both negative, there was a close correlation with CFU/ml of < 20,000. For reactions other than LE-N-, a bimodal response was observed with most bacterial counts split between 20,000 and 105 CFU/ml.

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Accession: 005395184

DOI: 10.1007/bf01567714

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Related references

Hughes, J.G.; Snyder, R.J.; Washington, J.A., 1985: An evaluation of a leukocyte esterase/nitrite test strip and a bioluminescence assay for detection of bacteriuria. A leukocyte esterase/nitrite (Chemstrip LNTM) and a bioluminescence assay (LumacTM) were evaluated for detection of bacteriuria in 1,000 urine specimens. Both devices provided high predictive negative values (95.4-97.8%); however, false-negative v...

Hughes J.G.; Snyder R.J.; Washington J.A.II, 1985: An evaluation of a leukocyte esterase nitrate test strip and a bioluminescence assay for detection of bacteriuria. A leukocyte esterase/nitrate (Chemstrip LN) and a bioluminescence assay (Lumac) were evaluated for detection of bacteriuria in 1000 urine specimens. Both devices provided high predictive negative values (95.4-97.8%); however, false-negative values...

Dalton, M.T.; Comeau, S.; Rainnie, B.; Lambert, K.; Forward, K.R., 1993: A comparison of the API Uriscreen with the Vitek Urine Identification-3 and the leukocyte esterase or nitrite strip as a screening test for bacteriuria. The API Uriscreen is a rapid urine-screening test based on the detection of catalase activity present in somatic cells and in many of the bacteria commonly causing urinary tract infections. Of 487 routine, outpatient urine specimens processed by c...

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Igari, J.; Sakiyama, K.; Nakasone, I.; Taira, S.; Hokama, S., 1987: Laboratory evaluation of leukocyte esterase and nitrite tests for the detection of bacteriuria. Kansenshogaku Zasshi. Journal of the Japanese Association for Infectious Diseases 61(6): 676-680

Park, C.H.; Hixon, D.L.; Ferguson, C.B.; Lawless, C.C.; Risheim, C.C.; Cook, C.B., 1985: Bacteriuria screening by leukocyte esterase nitrite strip plus gram stain. Virginia Medical 112(12): 786-789

Semeniuk, H.; Church, D., 1999: Evaluation of the leukocyte esterase and nitrite urine dipstick screening tests for detection of bacteriuria in women with suspected uncomplicated urinary tract infections. A positive dipstick urinalysis (i.e., leukocyte esterase test and/or nitrite test) did not reliably detect significant bacteriuria in 479 ambulatory women with suspected uncomplicated urinary tract infection; 18.9% of the urine samples that demons...

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